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Finding the Fourth Proportional to 605.62, 836.49 and 431.74

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Solution

The fourth proportional to 605.62, 836.49 and 431.74 is: 596.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.62 : 836.49 = 431.74 : x
  2. Step 2: Convert to fraction form
    605.62/836.49 = 431.74/x
  3. Step 3: Cross multiply
    605.62x = 836.49 × 431.74
  4. Step 4: Simplify right side
    605.62x = 361,146.19
  5. Step 5: Solve for x
    x = 361,146.19/605.62
  6. Step 6: Final answer
    x = 596.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.